Texas Instruments TAS2505/TAS2505-Q1 Class-D Speaker Amplifiers
Texas Instruments TAS2505/TAS2505-Q1 Class-D Speaker Amplifiers are a low power digital input speaker amp with support for 24-bit digital I2S data mono playback. In addition to driving a speaker amp up to 4Ω, the device also features a mono headphone driver and a programmable digital signal processing block. The digital audio data format is programmable to work with popular audio standard protocols (I2S, left/right-justified) in master, slave, DSP and TDM modes. Texas Instruments TAS2505/TAS2505-Q1 features a programmable digital-signal processing block that supports Bass boost, treble, or EQ functions.
An on-chip PLL provides the high-speed clock needed by the digital signal processing block. The volume level can be controlled by register control. The audio functions are controlled using the I2C serial bus or SPI bus. The TAS2505/TAS2505-Q1 includes an onboard LDO that runs off the speaker power supply to handle all internal device analog and digital power needs. The included power-on-reset circuit reliably resets the device to its default state so no external reset is required for normal usage. The device does have a reset pin for more complex system initialization needs. The TAS2505-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- Digital Input Mono Speaker Amp
- Supports 8kHz to 96kHz Sample Rates
- Mono Class-D BTL Speaker Driver (2W into 4Ω or 1.7W into 8Ω)
- Mono Headphone Driver
- Two Single-Ended Inputs With Output Mixing and Level Control
- Embedded Power-On-Reset
- Integrated LDO
- Programmable Digital Audio Processing Blocks for Bass Boost, Treble, EQ With up to Six Biquads for Playback
- Integrated PLL Used for Programmable Digital Audio Processing Blocks
- I2S, Left-Justified, Right-Justified, DSP, and TDM Audio Interfaces
- I2C Control and SPI control With Auto-Increment
- Full Power-Down Control
- Power Supplies
- Analog: 1.5V to 1.95V
- Digital Core: 1.65V to 1.95V
- Digital I/O: 1.1V to 3.6V
- Class-D: 2.7V to 5.5V (SPKVDD ≥ AVDD)
- 24-Pin VQFN Package (4mm×4mm)
Applications
- Portable Audio Devices
- White Goods
- Portable Navigation Devices
Simplified Block Diagram
